Infiniti I30 (A33). Manual — part 519
TERMINAL
NO.
ITEM
CONDITION
Voltage
V
27
Power supply for IGN
—
Approximately 12
30
Rear window defogger feed
back
Rear window
defogger switch
ON
Approximately 12
OFF
Approximately 0
31
Rear window defogger ON sig-
nal
Rear window
defogger switch
ON
Approximately 0
OFF
Approximately 12
32
Ground
—
Approximately 0
33
Power source for A/C
Ignition voltage feed back
Approximately 12
34
Blower motor feed back
Fan speed: Low
Approximately 7 - 10
35
Fan control AMP. control signal
Fan speed
Low, Middle low or Middle
high
Approximately 2.5 -
3.0
High
Approximately 9 - 10
GI
MA
EM
LC
EC
FE
AT
AX
SU
BR
ST
RS
BT
SC
EL
IDX
TROUBLE DIAGNOSES
Auto Amp. Terminals and Reference Value (Cont’d)
HA-35
Self-diagnosis
=NHHA0176
INTRODUCTION AND GENERAL DESCRIPTION
NHHA0176S01
The self-diagnostic system diagnoses sensors, door motors, blower motor, etc. by system line. Refer to appli-
cable sections (items) for details. Shifting from normal control to the self-diagnostic system is accomplished
by starting the engine (turning the ignition switch from “OFF” to “ON”) and pressing “
” switch for at least
5 seconds. The “
” switch must be pressed within 5 seconds after starting the engine (ignition switch is
turned “ON”). This system will be canceled by either pressing
(AUTO) switch or turning the ignition switch
“OFF”. Shifting from one step to another is accomplished by means of pushing TEMP dial right turn or TEMP
dial left turn switch, as required.
Additionally shifting from STEP 5 to AUXILIARY MECHANISM is accomplished by means of pushing
(fan)
UP switch.
RHA941H
Perform all of the following tests to narrow the problem to a specific assembly, actuator, or function.
Link to the Diagnostic Procedure which corresponds to malfunctions noted in these tests.
If the A/C display screen has no display, check all power supply circuits to the A/C Auto Amp.
TROUBLE DIAGNOSES
Self-diagnosis
HA-36
FUNCTION CONFIRMATION PROCEDURE
NHHA0176S02
1
ENTER SELF-DIAGNOSTIC MODE
Perform steps 1 - 3
1. Turn the ignition OFF.
2. Start the engine.
3. Immediately after starting the engine press and hold the OFF switch (for the auto A/C system) for at least 5 seconds.
The A/C Auto Amp. should now be in Self Diagnosis mode. Self Diagnosis steps 1 - 5 can now be performed. Self Diagno-
sis step 1 will be displayed first. Shifting from one step to another is accomplished by pressing the temperature increase
or decrease switch.
©
GO TO 2.
2
STEP 1 LED/DISPLAY CHECK
Verify all segments illuminate.
If all segments do not illuminate the fluorescent display tube is malfunctioning or the system has not entered self diagnosis
which would indicate a malfunctioning OFF switch.
Do all LEDs and segments illuminate?
RHA358H
Yes or No
Yes
©
GO TO 3.
No
©
Malfunctioning
switch, LED or fluorescent display tube.
Replace A/C auto amp.
3
CHECK TO ADVANCE SELF-DIAGNOSIS STEP 2
1. Turn the TEMP dial clockwise.
2. Advance to self-diagnosis STEP 2.
If the system does not shift between step 1 and 2 a malfunctioning TEMP dial is indicated.
Yes or No
Yes
©
GO TO 4.
No
©
Malfunctioning TEMP dial.
Replace A/C auto amp.
GI
MA
EM
LC
EC
FE
AT
AX
SU
BR
ST
RS
BT
SC
EL
IDX
TROUBLE DIAGNOSES
Self-diagnosis (Cont’d)
HA-37
4
CHECK TO RETURN SELF-DIAGNOSIS STEP 1
1. Turn the TEMP dial counterclockwise.
2. Return to self-diagnosis STEP 1.
If the system does not shift between step 1 and 2 a malfunctioning TEMP dial is indicated.
Yes or No
Yes
©
GO TO 5.
No
©
Malfunctioning TEMP dial.
Replace A/C auto amp.
5
STEP 2 - SENSOR CIRCUITS ARE CHECKED FOR OPEN OR SHORT CIRCUIT
Turn the TEMP dial clockwise, advance to STEP 2: Wait (about 25 seconds) for two digit Code to appear.
This is the Electronic Sensor Input Check which includes circuits.
Does code No.
appear on the display?
RHA970DB
Yes or No
Yes
©
GO TO 6.
No
©
GO TO 13.
6
STEP 3 - MODE DOOR AND INTAKE DOOR POSITIONS ARE CHECKED
Turn the TEMP dial clockwise, advance to STEP 3. Wait (about 50 seconds) for two digit Code to appear.
This is the Mode Door and Intake Door Position Switch input checks including circuits.
Does code No.
appear on the display?
RHA869DD
Yes or No
Yes
©
GO TO 7.
No
©
GO TO 14.
TROUBLE DIAGNOSES
Self-diagnosis (Cont’d)
HA-38
Нет комментариевНе стесняйтесь поделиться с нами вашим ценным мнением.
Текст